Top weekend shows: Valerie Simpson, Tori Amos

Valerie Simpson: With the recent passing of her husband and songwriting partner, Nick Ashford, Simpson will go it alone for the first time in what should be an emotional evening of memories and classic songs, 8 p.m. Saturday with the Whispers at the Star Plaza Theatre, Merillville, Ind., $39; starplazatheatre.com.

Tori Amos: The piano-pounding singer-songwriter’s latest left turn is a doozy, a reinterpretation of works by Bach, DeBussy and other classical composers to serve her latest song cycle about a woman in crisis, “Night of Hunters,” 8 p.m. Saturday at Chicago Theatre, 175 N. State St, $39.50, $49.50, $59.50; ticketmaster.com.